/** * {@inheritdoc} */ protected function doLeaveNode(Apishka_Templater_NodeAbstract $node, Apishka_Templater_Environment $env) { if ($this->doLeaveNodeIsSafeAll($node)) { // constants are marked safe for all $this->setSafe($node, array('all')); } elseif ($node instanceof Apishka_Templater_Node_Expression_Conditional) { // intersect safeness of both operands $safe = $this->intersectSafe($this->getSafe($node->getNode('expr2')), $this->getSafe($node->getNode('expr3'))); $this->setSafe($node, $safe); } elseif ($node instanceof Apishka_Templater_Node_Expression_Filter) { // filter expression is safe when the filter is safe $name = $node->getNode('filter')->getAttribute('value'); $args = $node->getNode('arguments'); if (false !== ($filter = $env->getFilter($name))) { $safe = $filter->getSafe($args); if (null === $safe) { $safe = $this->intersectSafe($this->getSafe($node->getNode('node')), $filter->getPreservesSafety()); } $this->setSafe($node, $safe); } else { $this->setSafe($node, array()); } } elseif ($node instanceof Apishka_Templater_Node_Expression_Function) { // function expression is safe when the function is safe $name = $node->getAttribute('name'); $args = $node->getNode('arguments'); $function = $env->getFunction($name); if (false !== $function) { $this->setSafe($node, $function->getSafe($args)); } else { $this->setSafe($node, array()); } } elseif ($node instanceof Apishka_Templater_Node_Expression_MethodCall) { if ($node->getAttribute('safe')) { $this->setSafe($node, array('all')); } else { $this->setSafe($node, array()); } } elseif ($node instanceof Apishka_Templater_Node_Expression_GetAttr && $node->getNode('node') instanceof Apishka_Templater_Node_Expression_Name) { $name = $node->getNode('node')->getAttribute('name'); if (in_array($name, $this->safeVars)) { $this->setSafe($node, array('all')); } else { $this->setSafe($node, array()); } } else { $this->setSafe($node, array()); } return $node; }